Primary optic lens and lamp for vehicle having the same

Abstract

A primary optic lens including: a first lower end surface that transmits light emitted from the light source; a first upper end surface having an inward recessed shape opposed to the first lower end surface and reflecting light transmitted from the first lower end surface; a second upper end surface connected to the first upper end surface and again reflects light reflected by the first upper end surface; and a second lower end surface connecting the second upper end surface with the first lower end surface.

What is claimed is: 
     
         1 . A primary optic lens comprising:
 a first lower end surface configured to transmit light emitted from a light source;   a first upper end surface having an inward recessed shape opposing the first lower end surface and configured to reflect light transmitted from the first lower end surface;   a second upper end surface connected to the first upper end surface and configured to again reflect light reflected by the first upper end surface; and   a second lower end surface connecting the second upper end surface with the first lower end surface.   
     
     
         2 . The primary optic lens of  claim 1 , further comprising:
 a light entering portion disposed between the light source and the primary optic lens, and configured to concentrate light that is emitted from the light source and enters the light entering portion.   
     
     
         3 . The primary optic lens of  claim 2 , wherein a portion of the light entering portion, where light enters, has a convex shape. 
     
     
         4 . The primary optic lens of  claim 2 , wherein the light entering portion has a parabolic shape. 
     
     
         5 . The primary optic lens of  claim 4 , wherein light entering the lighting entering portion having the parabolic shape is totally reflected at a side surface of the parabolic shape. 
     
     
         6 . The primary optic lens of  claim 1 , wherein the first upper end surface totally reflects the transmitted light. 
     
     
         7 . The primary optic lens of  claim 1 , wherein the first upper end surface has a reversed conical shape. 
     
     
         8 . The primary optic lens of  claim 7 , wherein the first upper end surface has an angle with respect to a central axis of 48 degrees or less. 
     
     
         9 . The primary optic lens of  claim 1 , wherein the first upper end surface has a shape of a body of revolution formed by rotating a curved line. 
     
     
         10 . The primary optic lens of  claim 1 , wherein the second upper end surface has a shape of a body of revolution formed by rotating a curved line. 
     
     
         11 . A lamp for a vehicle, comprising:
 a light source;   a substrate on which the light source is seated; and   a primary optic lens positioned on a line along which light is emitted from the light source.   
     
     
         12 . The lamp of  claim 11 , wherein the primary optic lens comprises:
 a first lower end surface configured to transmit light emitted from a light source;   a first upper end surface having an inward recessed shape opposing the first lower end surface and configured to reflect light transmitted from the first lower end surface;   a second upper end surface connected to the first upper end surface and configured to again reflect light reflected by the first upper end surface; and   a second lower end surface connecting the second upper end surface with the first lower end surface.   
     
     
         13 . The lamp of  claim 12 , wherein the substrate again reflects light reflected by the second upper end surface. 
     
     
         14 . The lamp of  claim 13 , wherein the substrate comprises a heat sink plate, or a heat sink plate is disposed on a rear surface of the substrate. 
     
     
         15 . The lamp of  claim 12 , further comprising a light diffusion lens disposed in front of the primary optic lens. 
     
     
         16 . The lamp of  claim 11 , wherein the light source comprises a light emitting diode.